Re: [PATCH] mm/khugepaged: alloc_charge_hpage() take care of mem charge errors

On Wed, Feb 22, 2023 at 6:43 AM Peter Xu peterx@redhat.com wrote:

If memory charge failed, the caller shouldn't call mem_cgroup_uncharge(). Let alloc_charge_hpage() handle the error itself and clear hpage properly if mem charge fails.

Cc: Johannes Weiner hannes@cmpxchg.org Cc: Yang Shi shy828301@gmail.com Cc: David Stevens stevensd@chromium.org Cc: stable@vger.kernel.org Fixes: 9d82c69438d0 ("mm: memcontrol: convert anon and file-thp to new mem_cgroup_charge() API") Signed-off-by: Peter Xu peterx@redhat.com

Reviewed-by: David Stevens stevensd@chromium.org